Gas-meter



UNITED STATES PAT NT OFFICE.

JOHN J. MYERS, OF BALTIMORE, MARYLAND.

GAS-M ETER.

SPECIFICATION forming part of Letters Patent No. 281,641, dated July 17, 1883.

Application filed June 2, 1883.

To all whom it may concern.-

Be it known that I, JOHN J. MYERs, of Baltimore, in the county of Baltimore and State of Maryland, have invented anew and Improved Gas-Meter, of which the following is a full, clear, and exact description.

My invention relates to dry gas-meters, and its object is to prevent tampering with the meter for the purpose of allowing a flow of gas without being registered. Stop or baffle plates have been fitted in the gas-ducts of meters for the purpose named; but they are objectionable in that they reduce the area of the passages and interfere with the normal flow of gas. In my improved device I vary the ordinary con struction so as to provide stop-plates that prevent access to the valve by means of a wire without decreasing the size of the passages, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of the valve-chamber of an ordinary meter. Fig. 2 is a longitudinal section of the gas-inlet tube with my improvements; and Fig. 3 is a similar view, representing a modification.

A is the meter; B, the supply-pipe; C, the valve-chamber, having valves D D, as usual, operated from shaft a.

In Fig. 2, b is the valve-table, and c the duct or channel from pipe B to the opening beneath the valve.

Usually the opening from channel 0 to pipe B is directly beneath the table I). In my improved construction an opening, d, is made in the tube an inch or more below the table, as shown in Fig. 2, and an opening, 6, is also made in the bottom of the channel 0, the two (No model.)

openings being covered by an inclined plate, f, fixed to form a channel from opening (I to passage 6. At the opening 6 the bottom of the channel a is extended to form a flange, 9, that will serve as a stop to awire inserted through tube B and opening d, and as a further precaution there may be a flange or stop at h on one side of opening d, and the other side bent, as at 2', so that a wire may not enter unless bent at nearly a right angle or in a form not possible to insert in the tube.

In Fig. 3 the arrangement is reversed, the

opening d and plate f being above the table 7 and opening 0 made in the table. Either arrangement may be used, and in both cases the construction allows the passages to be made of ample size, whether in a new meter or applied to an old one.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In gas-meters, the inlet-pipe B, formed with opening d, the duct or channel a, formed with opening e and guard g, and the plate f, connecting the openings (1 6, combined together and with the valve-table, substantially as described.

2. In gas-meters, the combination of the plate f with the tube B, having opening (I, and channel 0, having opening e, for forming a channel between the two openings, substantially as described.

3. In gas-meters, the guard or flanges h z, formed at opposite sides of the opening in the inlet-tube B, as andfor the purpose specified.

JOHN J. MYERS.

Witnesses:

AL.'M. BRIscoE, ABRAHAM SHARP. 

